Hank Johnson may be the winner for dumb, although there are many DemocRAT entries. Hank worries about the island of Guam tipping over and capsizing. That performance eclipses by a substantial amount Sheila Jackson Lee, who is on the Space subcommittee, believing U.S. astronauts planted a flag on Mars.
ENJOY MOCKING HANK: http://www.youtube.com/watch?v=zNZczIgVXjg
This is not exactly what Walter E. Williams meant. You are correct though. It is the ignorant that keep reelecting these idiots